标准房间火灾轰燃特性的实验研究

通过实体火灾实验,研究标准房间在不同装修部位、不同火灾荷载及不同通风排烟条件下发生轰燃的特性。实验发现,房间的可燃装修面积越大、部位越靠上,发生轰燃的可能性越大,发生轰燃越早,火灾危险性越大;房间内的火灾荷载越大,发生轰燃的可能性越大,发生轰燃越早;不同通风条件对房间的火灾特性影响很大,当排烟/送风低于某一值时轰燃才会发生,而且该比值越低发生轰燃的可能性越大。

Experimental research on fire flashover characteristics in standard room

By carrying out the fullscale fire tests,the flashover characteristics in different fire load,ventilation and smoke exhaustion conditions and decoration localization of the standard room were studied.It can be found through the tests that the flashover happened more possibly and the flashover time is earlier when the decoration area is bigger,the localization is higher and the fire load is heavier.The fire characteristics are greatly affected by different ventilation conditions.When the ratio of smoke exhaustion and air supply is lower than a critical value,the flashover happened and the lower of the ratio,the more possible of the flashover.